.rui-gobang-page-board-content{
  border: 1px solid #ddd;
  box-sizing: border-box;
  .rui-row-li{
    display: flex;
    align-items: center;
  }
  .rui-cell-li{
    width: calc((100vw - 2px) / 15);
    height: calc((100vw - 2px) / 15);
    border: 1px solid #ddd;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .rui-piece-li{
    display: block;
    width: 80%;
    height: 80%;
    border-radius: 50%;
  }
}